10. myspace.com: a place for friends… ten years ago.
9. orkut.com: Google-owned social networking site that’s wildly popular in Brazil
8. 51.com: like Facebook, but in China
7. friendster.com: Popular until myspace shot it out of the water
6. SKYROCK: free people networking… like Facebook, but in France
5. Hi5.com: Like facebook, but in Spanish-speaking countries
4. YouTube.com: Third most popular site on the web
3. LinkedIn.com: Networking for professionals
2. Twitter.com: Networking in 140-characters or less
1. Facebook.com: No comment necessary

instagram doesn't make the cut, but it's mobile
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